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st: RE: RE: dropping missing variables


From   Ben.Kriechel@roa.unimaas.nl
To   statalist@hsphsun2.harvard.edu
Subject   st: RE: RE: dropping missing variables
Date   Wed, 10 Sep 2003 16:31:45 +0200

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Thanks Nick, I knew there was a quick fix ;-)

> -----Original Message-----
> From: Nick Cox [mailto:n.j.cox@durham.ac.uk]
> Sent: woensdag 10 september 2003 16:31
> To: statalist@hsphsun2.harvard.edu
> Subject: st: RE: dropping missing variables
> 
> 
> -dropmiss-, STB-60
> 
> Nick 
> n.j.cox@durham.ac.uk 
> 
> Ben.Kriechel@roa.unimaas.nl
>  
> > Is there a way in which I can drop variables that have only
missing
> > observations? This is something that happens quite often in
general
> > purpose surveys in which specific sub-groups are analyzed. 
> > It is quite
> > annoying to keep all those unnecessary variables in 
> > memeory, and quite
> > tiring to identify and eliminate them all.
>  
> 
> *
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> *   http://www.ats.ucla.edu/stat/stata/
> 

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